It's probably easiest to just open up the "several places" and make the changes one by one. Generally you just don't want to be changing field names in databases.How can the name of a field in a table be changed throught the entire database? The database is not large, no external references, but this field is referenced in several places.
Access has an inbuilt means of tracking such changes but it's somewhat inconsistent (it won't work for Append queries, for instance, though it does for Select queries). Allen Browne recommends against using it. I personally haven't found it to cause any problems, but I'm not usually pushing Access too hard.